They had religion also. It is possible that more advanced civs (than we are aware of) existed 16,000 years ago but were wiped out by meteorites, which brought our numbers down, and made us spread out and reset.
Their religious practices wouldn't be compatible or align with our modern culture. To solve the meaning crisis we need to take from the past and integrate into something new, building a religion of the god beyond all gods, a complete contradictory task, but many contradictions arise merely due to the nature of our language and its linguistics.

The meaning crisis becomes more of a crisis the more we untangle it. For example when we had developed the psycho-technologies to use abstract letters for mathematical formulas we created speed = distance over time which meant that the universe was dead. Before this period celestial bodies were being moved by God. Everything was alive, the same as us and moving by the will of God, but after speed = distance over time and understanding of forces, the universe died. Previously religion would connect us to the universe, but now it cannot, as the universe is dead according to our culture.
Our body and mind are also disconnected according to our Western culture. We have a lot to resolve. And until we do, anything pop will act as pseudo-religion and adopt pseudo-religious langauage, such as climate for example.